Tidal current and tidal energy changes imposed by a dynamic tidal power system in the Taiwan Strait, China
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The Taiwan Strait has recently been proposed as a promising site for dynamic tidal power systems because of its shallow depth and strong tides. Dynamic tidal power is a new concept for extracting tidal potential energy in which a coast-perpendicular dike is used to create water head and generate electricity via turbines inserted in the dike. Before starting such a project, the potential power output and hydrodynamic impacts of the dike must be assessed. In this study, a two-dimensional numerical model based on the Delft3D-FLOW module is established to simulate tides in China. A dike module is developed to account for turbine processes and estimate power output by integrating a special algorithm into the model. The domain decomposition technique is used to divide the computational zone into two subdomains with grid refinement near the dike. The hydrodynamic processes predicted by the model, both with and without the proposed construction, are examined in detail, including tidal currents and tidal energy flux. The predicted time-averaged power yields with various opening ratios are presented. The results show that time-averaged power yield peaks at an 8% opening ratio. For semidiurnal tides, the flow velocity increases in front of the head of the dike and decreases on either side. For diurnal tides, these changes are complicated by the oblique incidence of tidal currents with respect to the dike as well as by bathymetric features. The dike itself blocks the propagation of tidal energy flux.
Key wordsdynamic tidal power ocean renewable energy Taiwan Strait Delft3D hydrodynamic impact
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This research was supported by the National Key R&D Program of China (No. 2017YFC1404202), the Key Program Project of the National Natural Science Foundation of China (No. 51137002), the Key Program Project of the Jiangsu Science Foundation (No. SBK201150230), the 111 Project (No. B12032), and the Research and Innovation Project for Postgraduate Students of the Universities of Jiangsu Province (No. CXZZ13_0259).
- Adema, J., and Hartsuiker, G., 2010. Potential locations for dynamic tidal power in China. Alkyon, 66pp.Google Scholar
- Baker, A. C., 1987. Tidal power. IEE Proceedings, 134: 392–398.Google Scholar
- Fang, G. H., Wang, Y. G., Wei, Z. X., Choi, B. H., Wang, X. Y., and Wang, J., 2004. Empirical cotidal charts of the Bohai, Yellow, and East China Seas from 10 years of TOPEX/Poseidon altimetry. Journal of Geophysical Research, 109: 227–251.Google Scholar
- Hulsbergen, K., de Boer, D., Steijn, R., and van Banning, G., 2010. Dynamic tidal power for Korea. 1st Asian Wave and Tidal Conference Series, 8pp.Google Scholar
- Hulsbergen, K., Steijn, R. C., Hassan, R., Klopman, G., and Hurdle, D., 2005. Dynamic tidal power (DTP). 6th European Wave and Tidal Energy Conference, UK, 215–222.Google Scholar
- Hulsbergen, K., Steijn, R., van Banning, G., Klopman, G., and Frohlich, A., 2008. Dynamic tidal power (DTP)–A new approach to exploit tides. 2nd International Conference on Ocean Energy, France, 1–10.Google Scholar
- Niu, L. X., van Gelder, P. H. A. J., Guan, Y., and Vrijling, J. K., 2015b. Uncertainty analysis and modelling of phytoplankton dynamics in coastal waters. Journal of Environment Protection and Sustainable Development, 1: 193–202.Google Scholar
- Pugh, D. T., 1987. Tides Surges and Mean Sea Level. John Wiley and Sons, Chichester, UK, 472pp.Google Scholar